Why do we need to assume so many things, when we can peg it to reality.
Worldwide, Google's data centers averaged 3.7GW in 2024. Globally, they use 8.135e9 gallons of water in the year, which is 30.8e6m³ per year, which is 84e3m³ per day. Double that to meet the assumed 8GW data center capacity, 168e3m³/day. QED: the estimate 1.4e6m³/day is high by a factor of 10x. Or, in other words, the entire information industry consumes the same amount of water as one very small city.
I believe this is why Google states their water consumption as equivalent to 51 golf courses. It gives a useful benchmark for comparison. But any way you look at it the water consumption of the information sector is basically nothing.
Even the golf course trade association only claims 10% grey water use.
Also, you're going to be shocked, data centers can cool with grey water as well. The now-cancelled Project Blue data center near Tucson was going to build and operate a wastewater pipeline and treatment plant and give it to the city, but the shouting NIMBYs prevailed anyway. The developer now intends to use air-to-air cooling, which costs more energy.
Worldwide, Google's data centers averaged 3.7GW in 2024. Globally, they use 8.135e9 gallons of water in the year, which is 30.8e6m³ per year, which is 84e3m³ per day. Double that to meet the assumed 8GW data center capacity, 168e3m³/day. QED: the estimate 1.4e6m³/day is high by a factor of 10x. Or, in other words, the entire information industry consumes the same amount of water as one very small city.
I believe this is why Google states their water consumption as equivalent to 51 golf courses. It gives a useful benchmark for comparison. But any way you look at it the water consumption of the information sector is basically nothing.